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$703+ Cheap flights from Porto Alegre (POA) to Seattle (SEA)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
POA — SEA
Sep 10 — Sep 171
Thu 9/10
Thu 9/17
1 adult, Economy
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Cheap flight deals from Porto Alegre to Seattle

Cheapest flights from Porto Alegre to Seattle
Explore the most affordable flight options available from Porto Alegre to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 11, 2026.

This GOL deal was found by Cheapflights users on 8/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure GOL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/37:35 pm -
2 stops32h 41m
Sat 2/2011:51 am -
2 stops22h 09m
Deal found 8/7$919
This GOL deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure GOL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:45 pm -
2 stops33h 07m
Fri 9/2510:17 am -
2 stops29h 28m
Deal found 8/10$923
This Expedia deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:30 am -
2 stops31h 35m
Tue 11/172:49 pm -
2 stops34h 51m
Deal found 8/6$1,092
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/105:10 pm -
3 stops26h 29m
Tue 11/178:09 am -
2 stops25h 11m
Deal found 8/6$1,162
This United Airlines deal was found by Cheapflights users on 8/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/103:45 pm -
3 stops26h 39m
Tue 10/68:25 am -
2 stops24h 35m
Deal found 8/8$1,357
This United Airlines deal was found by Cheapflights users on 8/6. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/32:05 pm -
3 stops29h 13m
Sat 2/207:00 am -
2 stops27h 25m
Deal found 8/6$1,682

Find flight deals from Porto Alegre to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Porto Alegre (POA) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$916
(LATAM Airlines)

One-way from

$703
(Air Canada)

Popular in

July

Cheapest in

February

Average price

$988
Provider with most accurate pricing for Porto Alegre Salgado Filho-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Porto Alegre Salgado Filho-Seattle/Tacoma Intl flights.
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From Porto Alegre Salgado Filho to Seattle/Tacoma Intl
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One-way flight from Porto Alegre Salgado Filho to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 28% potential increase in price ($357 potential increase over avg. RT price).
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Cheapest flight prices on average. 10% potential price decrease ($82 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Porto Alegre to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 11, 2026.
Use the filters below to find and compare flights from Porto Alegre to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Porto AlegreSeattle

POA Porto Alegre Salgado Filho - SEA Seattle/Tacoma Intl

POASEA

Porto Alegre Salgado Filho

Thu 12/3

7:35 pm-11:16 pm

2 stops32h 41m

Seattle/Tacoma Intl

Sat 2/20

11:51 am-3:00 pm

2 stops22h 09m

$919

Porto AlegreSeattle

POA Porto Alegre Salgado Filho - SEA Seattle/Tacoma Intl

POASEA

Porto Alegre Salgado Filho

Thu 9/10

6:45 pm-11:52 pm

2 stops33h 07m

Seattle/Tacoma Intl

Tue 10/6

12:04 pm-6:50 pm

2 stops26h 46m

$920

Porto AlegreSeattle

POA Porto Alegre Salgado Filho - SEA Seattle/Tacoma Intl

POASEA

Porto Alegre Salgado Filho

Thu 9/10

6:45 pm-11:52 pm

2 stops33h 07m

Seattle/Tacoma Intl

Fri 9/25

10:17 am-7:45 pm

2 stops29h 28m

$923

Porto AlegreSeattle

POA Porto Alegre Salgado Filho - SEA Seattle/Tacoma Intl

POASEA

Porto Alegre Salgado Filho

Tue 11/10

7:30 am-10:05 am

2 stops31h 35m

Seattle/Tacoma Intl

Tue 11/17

2:49 pm-6:40 am

2 stops34h 51m

$1,092
Cheapest one-way

Porto AlegreSeattle

POA Porto Alegre Salgado Filho - SEA Seattle/Tacoma Intl

POASEA

Porto Alegre Salgado Filho

Thu 11/5

2:15 pm-8:59 pm

2 stops35h 44m

$703
Quickest one-way

Porto AlegreSeattle

POA Porto Alegre Salgado Filho - SEA Seattle/Tacoma Intl

POASEA

Porto Alegre Salgado Filho

Thu 11/5

3:30 pm-2:39 pm

3 stops28h 09m

$904

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/7

Sorted by cheapest first
  • Most accurate provider: When it comes to deals on Porto Alegre-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Porto Alegre-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Porto Alegre-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Porto Alegre-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Porto Alegre-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Porto Alegre to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Porto Alegre with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Porto Alegre to Seattle

How much does it cost to fly round-trip from Porto Alegre to Seattle?

Airfare is typical for this route at the moment.

Porto Alegre to Seattle flights typically cost between $905 and $1,110 in February.
The cheapest round-trip price found within the last 5 days was $916 on LATAM Airlines (Feb 7-Feb 24).

Related info for your journey

Find useful and relevant information for your journey from Porto Alegre to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Porto Alegre to Seattle?

    GOL can get you from Porto Alegre to Seattle in just under 32h 41m. Your travel time can differ by up to . There are 6926 mi between Porto Alegre and Seattle.

  • Can I find deals for flights from Porto Alegre to Seattle that include hotel bookings?

    Yes. In addition to deals on Porto Alegre to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Porto Alegre to Seattle?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Porto Alegre to Seattle.

  • Can I find deals for business class flights from Porto Alegre to Seattle?

    Yes. Cheapflights offers flight deals from Porto Alegre to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Seattle?

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